Methods for field trials of interventions against tropical diseases : a 'toolbox' /
Smith, P. G.
Morrow, R. H.
United Nations Development Programme.
World Bank.
Special Programme for Research and Training in Tropical Diseases.
London : Oxford University Press,
1991.
Published by Oxford University Press on behalf of the UNDP/World Bank/WHO Special Programme for Research Training in Topical Diseases.
Tropical medicine